Not able to send short message using OutputStream.Write()

Hi,

I am trying to implement SSL socket connection with an android device. I am able to receive the message from android device successfully.

But while trying to write data , issue happens.

This is my write function

func write(message: String) {
 
        let data = message.data(using: .utf8)!
 
        data.withUnsafeBytes {
 
            guard let pointer = $0.baseAddress?.assumingMemoryBound(to: UInt8.self)
            else {
                print("Error")
                return
            }
            self.outputStream?.write(pointer, maxLength: data.count)
}
 }

If I send a small string, it is not received at android end. But when I send a large string, say count 30000 char. It will be received at android side. But first two characters will be lost.

Below is my connect function:

 
 
var inputStream: InputStream?
var outputStream: OutputStream?
var inputDelegate: StreamDelegate?
var outputDelegate: StreamDelegate?
 
 
func connect(host: String, port: Int) {
           Stream.getStreamsToHost(withName:host, port: 8443, inputStream: &inputStream, outputStream: &outputStream)
 
        inputDelegate = self
        outputDelegate = self
 
        inputStream!.delegate = inputDelegate
        outputStream!.delegate = outputDelegate
 
        inputStream!.schedule(in:RunLoop.main, forMode: .default)
        outputStream!.schedule(in:RunLoop.main, forMode: .default)    
  inputStream!.setProperty(kCFStreamSocketSecurityLevelNegotiatedSSL, forKey:  Stream.PropertyKey.socketSecurityLevelKey)
  outputStream!.setProperty(kCFStreamSocketSecurityLevelNegotiatedSSL, forKey: Stream.PropertyKey.socketSecurityLevelKey)
        let sslSettings : [NSString: Any] = [
            NSString(format: kCFStreamSSLValidatesCertificateChain): kCFBooleanFalse,
            NSString(format: kCFStreamSSLPeerName): kCFNull,
            NSString(format: kCFStreamSSLIsServer): kCFBooleanFalse
        ]
 
        inputStream!.setProperty(sslSettings, forKey:  kCFStreamPropertySSLSettings as Stream.PropertyKey)
        outputStream!.setProperty(sslSettings, forKey: kCFStreamPropertySSLSettings as Stream.PropertyKey)
 
        inputStream!.open()
        outputStream!.open()
 
    }
 
    
 

Please help to debug the issue.